Current short-range ensemble forecasts from the Korea Meteorological Administration and global models indicate a daytime maximum near 25–26°C in Busan on June 26, 2026, driven by a strengthening subtropical high, moderate Yellow Sea surface temperatures near 22–24°C, and increasing cloud cover with scattered showers that limit insolation. These conditions produce the tight clustering of market-implied probabilities around 25°C (24.5%) and 26°C (19.0%), with modest weight on 27°C reflecting residual model spread in boundary-layer mixing and exact precipitation timing. Historical June climatology shows average highs of 25–27°C under similar synoptic setups, while any clearer breaks or stronger onshore flow could push readings slightly higher before resolution. Updated model runs and official KMA briefings over the next 48 hours will narrow the remaining uncertainty.